This electricity monitor is a portable device that allows you to keep track of your energy use, making householders more aware of their usage

What is it? The Owl electricity monitor is a portable device that allows you to keep track of your energy use. With electricity prices up by 3.2% in the past year, the Owl can make householders more aware of their usage, and ultimately cut down on their bills.

How does it work? The Owl comes with two units: a transmitter that connects to the electricity supply cable at your meter and measures the flow of electricity; and a monitor to which it broadcasts readings.

The monitor unit, which is wireless, can be moved all around the house, allowing the user to check the changes to usage caused by individual devices, such as a hair dryer.

Users set the device by taking the per unit cost of electricity detailed in their bill and keying it into the Owl. The device, which is set like a stop watch, then